This mission parish is quite small, with around 10-12 families. Sadly, they appear to have no web presence either. This is the only info I have been able to find:
Holy Cross Orthodox
West 4th Street
Seymour, Indiana 47274
The priest is Hieromonk Christopher Wendling-Way
I wasn't able to find any phone or contact info available.
I live in Indiana, and checked even the local Seymour church directories... this church didn't even make most of their radar screens.
All I can suggest is you contact ROCOR and/or their WRV. Hopefully, someone else on this forum may attend their or be able to provide more info.